LXR uboot/tools/mingw

   1/*
   2 * Copyright 2008 Extreme Engineering Solutions, Inc.
   3 *
   4 * mmap/munmap implementation derived from:
   5 * Clamav Native Windows Port : mmap win32 compatibility layer
   6 * Copyright (c) 2005-2006 Gianluigi Tiesi <sherpya@netfarm.it>
   7 * Parts by Kees Zeelenberg <kzlg@users.sourceforge.net> (LibGW32C)
   8 *
   9 * SPDX-License-Identifier:     LGPL-2.0+
  10 */
  11
  12#include "mingw_support.h"
  13#include <stdio.h>
  14#include <stdint.h>
  15#include <string.h>
  16#include <errno.h>
  17#include <assert.h>
  18#include <io.h>
  19
  20int fsync(int fd)
  21{
  22        return _commit(fd);
  23}
  24
  25void *mmap(void *addr, size_t len, int prot, int flags, int fd, int offset)
  26{
  27        void *map = NULL;
  28        HANDLE handle = INVALID_HANDLE_VALUE;
  29        DWORD cfm_flags = 0, mvf_flags = 0;
  30
  31        switch (prot) {
  32        case PROT_READ | PROT_WRITE:
  33                cfm_flags = PAGE_READWRITE;
  34                mvf_flags = FILE_MAP_ALL_ACCESS;
  35                break;
  36        case PROT_WRITE:
  37                cfm_flags = PAGE_READWRITE;
  38                mvf_flags = FILE_MAP_WRITE;
  39                break;
  40        case PROT_READ:
  41                cfm_flags = PAGE_READONLY;
  42                mvf_flags = FILE_MAP_READ;
  43                break;
  44        default:
  45                return MAP_FAILED;
  46        }
  47
  48        handle = CreateFileMappingA((HANDLE) _get_osfhandle(fd), NULL,
  49                                cfm_flags, HIDWORD(len), LODWORD(len), NULL);
  50        if (!handle)
  51                return MAP_FAILED;
  52
  53        map = MapViewOfFile(handle, mvf_flags, HIDWORD(offset),
  54                        LODWORD(offset), len);
  55        CloseHandle(handle);
  56
  57        if (!map)
  58                return MAP_FAILED;
  59
  60        return map;
  61}
  62
  63int munmap(void *addr, size_t len)
  64{
  65        if (!UnmapViewOfFile(addr))
  66                return -1;
  67
  68        return 0;
  69}
  70
  71/* Reentrant string tokenizer.  Generic version.
  72   Copyright (C) 1991,1996-1999,2001,2004,2007 Free Software Foundation, Inc.
  73   This file is part of the GNU C Library.
  74
  75  * SPDX-License-Identifier:    GPL-2.0+
  76 */
  77
  78/* Parse S into tokens separated by characters in DELIM.
  79   If S is NULL, the saved pointer in SAVE_PTR is used as
  80   the next starting point.  For example:
  81        char s[] = "-abc-=-def";
  82        char *sp;
  83        x = strtok_r(s, "-", &sp);      // x = "abc", sp = "=-def"
  84        x = strtok_r(NULL, "-=", &sp);  // x = "def", sp = NULL
  85        x = strtok_r(NULL, "=", &sp);   // x = NULL
  86                // s = "abc\0-def\0"
  87*/
  88char *strtok_r(char *s, const char *delim, char **save_ptr)
  89{
  90        char *token;
  91
  92        if (s == NULL)
  93                s = *save_ptr;
  94
  95        /* Scan leading delimiters.  */
  96        s += strspn(s, delim);
  97        if (*s == '\0') {
  98                *save_ptr = s;
  99                return NULL;
 100        }
 101
 102        /* Find the end of the token.  */
 103        token = s;
 104        s = strpbrk (token, delim);
 105        if (s == NULL) {
 106                /* This token finishes the string.  */
 107                *save_ptr = memchr(token, '\0', strlen(token));
 108        } else {
 109                /* Terminate the token and make *SAVE_PTR point past it.  */
 110                *s = '\0';
 111                *save_ptr = s + 1;
 112        }
 113        return token;
 114}
 115
 116#include "getline.c"
 117